widespread gray over the east bay, into the south bay right now. santa rosa has improved over the last hour. partly cloudy, mostly sunny skies reported in santa rosa. in and around sunnyvale, san jose, mountain view, milpitas, fremont, low clouds, patchy fog. inland areas, visibility has dropped down about a quarter a mile, meaning trouble for the motorists. if you're traveling in this area, you may have trouble, vallejo, fairfield, where there is a patchy dense fog advisory lasting until 10:00 this morning, issued by the sacramento office, again, from vallejo, cordale yeah, 780, 680, i-80, could be a little tough. give yourself extra time, extra space between the cars. you know how it goes. 52 in fairfield, 50 in concord. widespread low 50s around the bay. temperatures slowly creeping. mid-40s in santa rosa, but now with the sun shining, you'll begin to warm as well. watching one system exit the area. this is the second system that will bring us the cooler air for your weekend. so in a nutshell, a mix of sun and clouds in store for today.